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发明名称
Verfahren und Vorrichtung zum Pruefen der Dichtheit der Wandung von elektrischen Vakuumgefaessen
摘要
申请公布号
DE742222(C)
申请公布日期
1943.11.24
申请号
DE1940S143433D
申请日期
1940.12.24
申请人
SIEMENS-SCHUCKERTWERKE AG.
发明人
FRICKE DR.-ING. HANS
分类号
H01J9/42
主分类号
H01J9/42
代理机构
代理人
主权项
地址
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